Biology of the Rhizobiaceae

List of Contributors

Preface

Supplements in Series

The Taxonomy of the Rhizobiaceae

I. Introduction

II. The Genus Agmbacterium

III. The Genus Rhizobium

IV. Relationship between Agrobacterium and Rhizobium

References

Biology of Agrobacterium tumefaciens: Plant Interactions

I. Introduction

II. Disease Cycle

III. Control of Crown Gall Disease

IV. Conclusions

References

Agrobacterium tumefaciens in Agriculture and Research

I. Introduction

II. Crown Gall Disease around the World

III. Host Range

IV. Factors Affecting Development of the Disease

V. Virulence and Avirulence of Agrobacterium tumefaciens

VI. Agricultural Control of Agrobacterium tumefaciens

VII. Agrocin and Its Mode of Action on Agrobacterium tumefaciens

VIII. Chemical Treatments

IX. Evaluation of Present Methods of Control

References

Suppression of, and Recovery from, the Neoplastic State

I. Introduction

II. The Potential of the Tumor Cell

III. Crown Gall Teratoma

IV. Recovery from Crown Gall Tumor Disease

V. Suppression and Recovery in Other Neoplastic Diseases

References

Note Added in Proof

Plasmid Studies in Crown Gall Tumorigenesis

I. Introduction

II. General

III. Ti Plasmid-Determined Traits

IV. Genetic Analysis of Ti Plasmid DNA

V. T-DNA

References

Note Added in Proof

The Position of Agrobacterium rhizogenes

I. Introduction

II. Biology of the Organism

III. Molecular Biology of the Hairy Root Plasmid

IV. Future Prospects

References

Recognition in Rhizobium -Legume Symbioses

I. Introduction

II. Recognition in the Soybean-Rhizobium japonicum System

III. Recognition in the Clover-Rhizobium trifolii System

IV. The Rhizobium Cell Surface

V. Concluding Remarks

References

The Rhizobium Bacteroid State

I. Introduction

II. Structural Aspects of the Bacteroid State

III. Genetic Aspects of the Bacteroid State

IV. Bacteroid Biochemistry and Physiology

References

Exchange of Metabolites and Energy between Legume and Rhizobium

I. Introduction

II. Root-Shoot Interactions

III. Basic Reactions of Dinitrogen Fixation

IV. Ammonia Incorporation and Translocation

V. Cost of Dinitrogen Fixation

VI. Mass and Composition of Nodules

VII. Summary and Prospects

References

The Genetics of Rhizobium

I. Introduction

II. Mutant Isolation

III. Gene Transfer Systems

IV. Chromosomal Mapping

V. Arrangement of Genes in Rhizobium

VI. Genetics of Rhizobiophages

VII. Strain Construction in Rhizobium

VIII. Conclusions

References

Indigenous Plasmids of Rhizobium

I. Introduction: Early Genetic Evidence for Plasmid Control of Symbiotic Properties (1967-1976)

II. Physical Evidence for the Presence of Large Plasmids

III. Genetic Methods for Plasmid Studies

IV. Plasmid Control of Early Functions in Symbiosis

V. Plasmid Control of Late Functions in Symbiosis

VI. Concluding Remarks

References

Note Added in Proof

Nodule Morphogenesis and Differentiation

I. General Introduction

II. Invasion of the Root Hair

III. Role of the Root Cortex

IV. Ineffective Root Nodules

V. Cells Associated with Metabolite Transport

VI. Rhizobium Nodules on Nonlegumes

VII. General Conclusions

References

Mutants of Rhizobium That Are Altered in Legume Interaction and Nitrogen Fixation

I. Introduction

II. Spontaneous Derivatives

III. Symbiotic Mutants Obtained by Direct Isolation

IV. Contaminants Mistaken for Mutants

V. Drug-Resistant Mutants

VI. Auxotrophs

VII. Glutamine Synthetase Mutants

VIII. Polysaccharide-Deficient Mutants

IX. Pleiotrophic Carbohydrate-Negative Mutants

X. Interesting Mutants Retaining Symbiotic Nitrogen-Fixing Ability

XI. Overview

References

The Significance and Application of Rhizobium in Agriculture

I. Introduction

II. Application of Rhizobium in Agriculture

III. Significance of Inoculation in Agriculture

IV. Factors Limiting Inoculation in Agriculture

References

Index